By Craig Hilton-Taylor
Release of the 2000 pink record is an important landmark for IUCN. it's the first time that listings of animals and crops were mixed and the 1st time that the crimson record has been produced on CD-ROM. The 2000 crimson checklist combines new assessments‹including all chook species, many antelope and bat species, such a lot primates and sharks, all Asian freshwater turtles, extra molluscs, and plenty of others‹with these from prior guides. the mix of animals and vegetation right into a unmarried record containing checks of greater than 18,000 taxa (11,000 of that are threatened species) and the stream in the direction of greater documentation of every species at the checklist implies that a hard-copy model of the purple record might run to a number of volumes. This, mixed with the truth that the crimson record could be up to date each year, ended in the choice to unlock the purple checklist in digital layout, through the area vast internet and as a CD-ROM.
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Additional info for 2000 IUCN red list of threatened species
An attempt has been made to code the presence of all threatened species according to their occurrence in the three major biomes – terrestrial, inland waters and marine (Table 6). Where large numbers of aquatic species have been assessed, the proportion of threatened species rises markedly. The steep increase in the number of threatened marine birds compared to the figure of 61 given by WCMC (2000) is attributed to the increased number of albatrosses, petrels and penguins now included in the threatened categories.
The detailed country tables for all these taxa are included on the web site and the CD-ROM should the reader wish to explore them further. Other Worms Velvet Worms 0 0 0 13 2 2 0 1 0 Inland Water 1946 31 78 111 131 627 0 409 125 420 0 0 0 0 14 Terrestrial 9256 1111 1144 283 143 0 11 0 438 508 0 0 6 5 5607 Insects Plants Nemertine Worms 163 Molluscs 0 Fishes 9 Reptiles 105 Birds 25 Mammals 320 Marine Total Corals & Anemones Crustaceans Spiders & Centipedes Numbers of threatened species in three major biomes Amphibians Biome Type Table 6.
For the purposes of this analysis the lower level threats in the hierarchy (see Annex 5) were grouped together to identify the major threats at the primary level and then two of the most important threats were further analysed to identify the specific threatening processes involved. As with the habitats analysis, a species can have more than one threat and so the values within a species group are non-exclusive. 27 Red List 2000 06 September 2000 16:14:54 Color profile: Generic CMYK printer profile Composite Default screen 2000 IUCN Red List of Threatened Species Habitat loss and degradation The results in Figure 9 show that the most pervasive and over-riding threat to birds, mammals and plants is habitat loss and degradation, affecting 89% of all threatened birds, 83% of the threatened mammals sampled and 91% of the threatened plants sampled.
2000 IUCN red list of threatened species by Craig Hilton-Taylor